We divide 640453 by 7
We're looking to find how many times 7 goes into 640453.

Let's proceed to step 1:
7 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 7

On to step 2:
When dividing 64 by 7, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 63 from 64 leaves us with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 7

On to step 3:
The number 7 fits into 10 1 times, leaving a remainder of 3.
The next digit of our result is 1. 
Result so far: 91.0
If we take 7 away from 10, we end up with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 7

Step 4:
If we divide 34 by 7, we get 4 and a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 914.0
Deduct 28 from 34 and we're left with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 7

Advancing to step 5:
If we divide 65 by 7, we get 9 and a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 9149.0
The remainder is 2 after subtracting 63 from 65.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 7

Moving on to step 6:
If we divide 23 by 7, we get 3 and a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 91493.0
Subtracting 21 from 23 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
The number 7 fits into 20 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 91493.2
Subtracting 14 from 20 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
7 goes into 60 8 times with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 91493.28
Subtract 56 from 60 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
7 goes into 40 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 91493.285
If we take 35 away from 40, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
7 can be fit into 50 7 times, resulting in a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 91493.2857
The remainder is 1 after subtracting 49 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 11:
7 can be fit into 10 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 91493.28571
Deduct 7 from 10 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 12:
30 divided by 7 is 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 91493.285714
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 13:
7 can be fit into 20 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 91493.2857142
Subtract 14 from 20 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 14:
If we divide 60 by 7, we get 8 and a remainder of 4.
The next digit of our result is 8. 
Result so far: 91493.28571428
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 91493.28571428, and the remainder is 4e-09.